1990 Plymouth Horizon Speaker Sizes
The 1990 Plymouth Horizon factory audio system locations include front door panels that accommodate 5.25 inch speakers, and rear door panels that support a 6x9 inch speaker size. Midbass and full-range units function as compatible speaker types for sound system replacement and upgrade purposes.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Door Panel | 6x9 | Full-Range |
|
1990 Plymouth Horizon Speaker Replacement Summary
2
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 0 High: 0Replacement priority:
High: 1 Medium: 1 Low: 01990 Plymouth Horizon Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1990 Plymouth Horizon front door panels accommodate 5.25 inch speakers, which can accept either midbass drivers or full-range units depending on the sound system configuration desired.
- Rear door panel locations in the 1990 Plymouth Horizon utilize 6x9 inch speakers limited to full-range types, suggesting these positions likely handle broader frequency reproduction compared to the front locations.
- Replacing factory speakers with aftermarket units may improve clarity and dynamic range, particularly if original components have degraded over time or were entry-level specifications from the factory.
- The different sizing between front and rear speakers indicates a factory-designed distribution of frequency responsibilities, with the oval 6x9 configuration potentially offering greater cone area for lower frequency extension.
- Full-range compatibility in both locations suggests the audio system was designed without separate subwoofer provisions, relying on door-mounted speakers for the entire audible spectrum.
- Midbass-specific drivers in the front positions could provide improved mid-frequency punch when paired with separate tweeters, though full-range units remain an option for simpler installations.
- The single DIN radio opening allows for straightforward head unit replacement without requiring dash modifications, maintaining compatibility with standard aftermarket receivers.